Scientific paper/ Artículo científico AGRONOMY pISSN:1390-3799; eISSN:1390-8596 http://doi.org/10.17163/lgr.n37.2023.09 P HYSICOCHEMICAL INDICATORS OF SOIL WITH CONVENTIONAL RICE ( Oriza sativa L.) MANAGEMENT UNDER IRRIGATION I NDICADORES FISICOQUÍMICOS DEL SUELO CON MANEJO CONVENCIONAL DEL ARROZ (Oriza sativa L.) BAJO RIEGO Daniel Trigoso-Becerril 1 , Nelino Florida-Rofner* 1 , and Alex Rengifo-Rojas 2 1 Departamento de Ciencias en Conservación de Suelos y Agua. Facultad de Recursos Naturales Renovables. Universidad Nacio- nal Agraria de la Selva, Perú. 2 Departamento de Ciencias Económicas. Facultad de Ciencias Económicas y administrativas. Universidad Nacional Agraria de la Selva, Perú. *Corresponding author: nelinof@hotmail.com Article received on February 04th, 2021. Accepted, after review, on January 17th, 2022. Early access on December 1st, 2022. Published on March 1st, 2023. Abstract The research evaluated the effect of conventional management of irrigated rice on the physicochemical indicators of the soil, in the Mercedes and Pérez farms, in Yurimaguas, Peru. It is a comparative non-experimental investigation, with statistical adjustment of a completely randomized design, where the treatments are made up of the secondary forest (BS), the conventional rice management of one (A1), five (A5) and nine years (A9), evaluating physicochemical indicators of the soil in strata from 0.0 to 0.2 and 0.2 to 0.4 m. The results showed differences in the fractions, with initial reduction of sand, silt and clay increase and in time slight recovery of the sand, silt fraction and clay reduction. The chemical indicators according to treatments and strata show differences, except K; management significantly af- fects the beginning of the production process (A1) reducing the levels of pH, MO, N, P, K + , Ca 2+ and Mg 2+ and increasing Al 3+ , AC and SAl, and there is a recovery over time (A9), except in MO and N which decrease to very low levels. In conclusion, conventional management shows significant effects between treatments and indicators evalua- ted in both strata, negatively affecting the beginning (A1) and recovering over time (A9); however, there are long-term negative effects on OM and N levels. Keywords: Chemical fertilization, physical indicators, chemical indicators, organic matter, crop residues, Yurimaguas, Peru. 114 LA GRANJA: Revista de Ciencias de la Vida 37(1) 2023:114-126. ©2023, Universidad Politécnica Salesiana, Ecuador.